Power moldboard tilt for graders and the like



March 1940- c. w. SOWELL 2,194,875

POWER MOLDBOARD TILT GRADERS AND THE LIKE Filed April 11, 1938 3 Sheets-Shee t 1 FIB-l,

JNYEZY TOR ATTURNEYS GZIHREHGB n. 5014751211. I

March 26, 1940. c. w. SOWELL 2,194,875

POWER MOLDBOARD TILT FOR GRADERS AND THE LIKE Filed April 11, 1958 3 Sheets-Sheet 2 March 26, 1940- c. w. sowrsu. 2,194,875

POWER MOLDBOARD TILT FOR GRADERS AND THE LIKE Filed April 11, 1938 3 Sheets-Sheet 3 JJYYEJYTOH .HTPUHZYEYS Patented Mar. 26, 1940 E I I I v UNITED STATES mm O F C '5 POWER MOLDBOARD me FOR-GRADERS I I AND THE LIKE Clarence W. Sowell, North Hollywood, Calif. Application April 11, 1938, Serial No. 201,381

2 Claims. (01. 37-159) This .invention relates to improvements in obstruction by t pp the blade from a emote graders d h particular referen t grader pointv and continuev scraping with, the blade in whereinnthe blade may be tipped, through m this position,.if'desired; or the blade may. be rechanical means and present various angles beed to s o p g P o al a 5. tween the grader and the ground, thereby enangle tothesurface.v Thus, through the abrasive 5 abling the grader to be self-sharpening under action on the surface, the blade is p ic y certain conditions. self-sharpening and will, therefore, present a A further object is to produce a device of this keen cutting ge thro o tt e o the character which is economical to manufacture, .blade.

and one which may be applied to almost any In the mp r wines wh r o the 10.

standard form of road machinery, such as p p se of illustration is shown a p c e graders, levelers, and'the like. bodiment of my invention, the numeral 5 d'esig- A further object is to provide means whereby ates 5 portion of a pp r turntable haVil'lg the operator may tip the blade from a remote down-turned ends 8 and 9, which are attached point without stopping the progress ofthe scraper. to the moldboard 6 through the medium of the 15 A further object is to produce a device of this stabilizer plates i3 and I4 and to which moldcharacter whereby the strain may be relieved board the blade '1 is secured in a y d s ed a from the scraper blade quickly so as to avoid ner. 'Ihe down-turned ends 8 and 9 have damage to the said blade. pivoted thereto, as at H, an auxiliary supporting 0 Other objects and advantages will be apparent bracket l2, which is attached to the moldboard during the course of the following description. 6. Stabilizer plates l3 and M are in turn at- In the accompanying drawings forming a part tached to the moldboard 6 adjacent the ends 6 of this specification and in which like numerals ands. In order to rock the moldboard 6 and its are employed to designate like parts throughout attached parts, I employ a hydraulic ram which is pivotallymounted upon the turntable 5 through 5 the same,

Fig. 1 is a top plan view of my device; the medium of a pivot bracket H], the ram being Fig. 2 is a side elevation of Fig. 1, showing the designated by the numeral I9. This ram has its blade in normal scraping position; piston rod 21 connected to a crank arm 22, which Fig. 3 is a view similar to Fig. 2, showing the is pivoted as at 23 to a bearing block 24 mounted. blade tipped into a rearward position and capable upon, the downturned end 8 and in turn pivoted 30 of passing over a hard obstruction Without inas at 26 to a link 21, pivoted as at 28 to a bracket v jury to the scraper blade; mounted on the moldboard 6. The stabilizer plates Fig. 4 is a fragmentary side elevation of one 53 and M are provided with curved slots Hi 00-] of the retaining dogs looking from the inside; operating with the rollers H on the turntable for Fig.5 is a side. elevation of a slightly modified bracing the same. 35 form of retaining dog showing an oblong opening In order to hold the parts in'adjusted positio for mounting it on the shaft; and I provide teeth 29 on the stabilized plates which Fig. 6 is a side elevation, showing a section of are engaged by dogs 3! and 32 secured to a cross the frame in reverse relation to that shown in rod 33 and rotated through the medium of a Figs. 2 and 3. downwardly extending arm 34 and a cable 36 eX- 40 Ordinarily, scraper blades are secured to a tending rearwardly to the drivers compartment supporting framework from beneath the underof the vehicle.

side of a supporting turntable mounted on a ve- In order to simplify the drawings the pipes con- -hicle. These scraper blades may be tipped to ducting thehydraulic pressure to the ram have various angles and set to operate at any prede-- been omitted from Figs. 2 and 3. 45 termined angle. When it is desired to change the The result of this construction is that when angle, it is necessary for the operator of the vethe parts are in the position shown in Fig. 2," and hicle to stop; and due to the weight of these degood ground is encountered, the scraper will be vices, it usually requires the services of several positioned as shown in this figure; but'should men using hammers and crowbars in order to some hard ground be encounteredthat is,grou nd move the blade, with the result that considerable where .the hard rocks protrude above the surface time is lost in the changing of the angle, and being scraped, or where accumulation of ,weeds, also this operation causes the blade to be supsticks, and the like may clog the scrapingoperaported unevenly. tionthen it is'possible to movethe scraper to, 1 5 With my device it is possible to pass over an the position shown in Fig. 3. This is accomplished e by the operator pulling upon the rope 36, which in turn will rotate the cross rod 33 and lift the dogs 3| and 32. Then by applying fluid pressure to the ram, the same will be forced from the position shown in Fig. 2 to that of Fig. 3, which will cause the moldboard and its attached parts to be moved about the pivot H until it has taken the desired position, after which the operator releases the cord or the rope, and the dogs will drop into the teeth on the stabilized plates, thus maintaining the blade in the new adjusted position.

It is to be understood that the form of my in vention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a device of the character described, a supporting turntable having down-turned ends, a moldboard pivoted to said ends, a scraping blade secured to said moldboard, stabilizer plates secured to said moldboard, hydraulic means operable from a remote point and link connected to said moldboard for moving said moldboard about its pivotal points, and means for locking said stabilizer plates and their attached parts in adjusted position including gravity actuated dogs carried by the turntable and capable of engaging indentations formed on said stabilizer plates.

2. In a device of the character described, a supporting turntable having downwardly turned ends, a moldboard, a scraper carried by'the moldboard, stabilizer plates secured to the moldboard and pivotally mounted on the downwardly turned ends of the turntable, a hydraulic cylinder mounted on the turntable, a piston rod operated by a piston in the cylinder, a crank arm pivotally connected to the turntable, and having one end pivotally connected to the piston rod, a link having one end pivotally connected to the other end of the crank arm and its end pivotally connected to the moldboard, the upper end of the stabilizer plates having segmental portions provided with notches, and gravity actuated dogs carried by the turntable and co-operating with said notches for holding the stabilizer plates in their adjusted position.

CLARENCE W. SOWELL. 

